Apparatus for gas analysis.



` K.. WJBAETLETT az J.;J. STALEY.

` LPABATUS rca als Mmrsrs.A

APPLICATIOI FILED FOV. 'Il 1908.

Patented Jan. 11,1910.

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K. W. BARTLETT & J. J. STALEY.

APPARATUS rol; GAS ANALYSIS. APPLIGATIQN FILED HOV. 7, 1908.V

Patented Jan.11,1910.

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UNITED srA'rEs PfirENr oEEioE.

l KENT W. BARTLETT AND JUDSON J. STALEY. F MADISON, WISCONSIN- A-SSIGNORS TO -NORTHERN WATER SOEIElNl'El-, COMPANY, 0F MADISON, 'WISCONSIEL A CORPORA- TION 0F MAINE.

. ".l".PARATUS FOR GAS ANALYSIS.

Specification of Letters Patent. 'Patented' Jan" 11, 1910.

Application tiled November T. 1908. Serial No. 481,449.

To all whom 'it may concern:

Beit known that we, KENT 1V. BARTLEi'r, and Jonson J. STALEY, citizens of the United States,.residing at Madison, in the county of Dane and State of ll-lisconsin, having invented a certain new and useful Improvement. in Apparatus for Gas Analysis, of which the following is a full, clear, concise, and exact description,4 reference being had to the accompanying drawings, forming a part. of this specification.

Ourinvention relates to apparatus for gas analyzing and has for its object improved arrangement which will automatically` and continuously analyzeA gasl and record the analysis.

- In prior arrangements for testing flue gas' a plurality of more or less complicated steps are necessary in order to obtain correct analysis. In our improied arrangement all the various steps are automatically per'-, formed` the operation being entirely automatic and continuous, the results of the ana-lysis being indicated or printed.l

In the accompanying drawings, which clearly show our improved arrangement Fig .-ure 1 is an elevation 1.fiew of the. various analysis mechanisms. Fig. 2-is a top View -of the apparatus shown in Fig. 1. F 3

is an enlarged View of part of the record chart and the marking member controlling mechanism. Fi". 4 is a top view of the part-s shown in Fig. Fig. 5 is a sectional View taken on line 53,' 5 of Fig. 3. Fig. 6 is an enlarged View ofthe electro-magnetic valve controlling mechanism; and Fie. 'T is a view taken' on plane 7, 7 of Fie. 6.

Ye shall first. describe the various mechanisms and recording members and then the operation and eoperation thereof to analyze iue gas.

Referring first to Fig. l, 1 represents a receptacle `which connects through the pipe 2 with the lower end of a cylindrical reserand 'the'contact point t) in engagement with a terminal 10.' The arm S 'also' has a contact point 11, and this contactvpoint. when the weight i falls, is carriedV around into engagement with the contact member 12. Therefore, as the floatl rises and falls in the reservoir Stile contact arm 8 swings from one contact member to the other. Tapping the reservoir 3 at a point below the tioat is a pipe 13 which extends npwardli level with the top of ti-.e reservoir and which contains a subreserioir 1l. 15 represents a separating r seiwoir connected through pipe 1G with a drying reservoir 1G. iT represents another reservoir which is con n'ected through pipe 18 with the lower end of the measuring reservoir 19. In this reservoir 19 is a plunger 20, from which a cord 21 extends and passes over a pulley. 22, terminatingatits other' end in a weight-23. 24. represents a cylindrical valve frame or shell having six connecting ends, 25, 2G, 2T. 28, 29 and 30, spaced 60 degrees apart; 'ithin the Valve is the valve plug 31' haiing three 'valve-passagewajrs, 32, 33 and 3l-l whose outlets are spaced 6G degrees in order that each space may connect with two adjacent outlets. Connecting end 25 is connected with a source of flue gas, this gas being preferably deliyered under pressure. Connecting member 26 connects with the top of reservoir 1. Connecting end 2T connects through pipe which leads to the bottom of the reservoir 15. 'Connecting end 2S connects through pipe-lt with the upper end of the drying reservoir 1G. a valve 37 being shown as interposed in sait; pipe. Connecting end 29-connectsvthrongh pipe 3S with the top of reservoir 1T and the end 30 connects with atmosphere. The various reservoirs which we have mentioned can be in the form of glass bulbs and the measuring reservoirs can be in the form of glass tubes. The piping connecting the various members can also be in the form of glass tubing, and in this piping drain cocks or valves can be inserted as desired.

Referring particularly to Figs. 3, 4 and 5, we haue shown a recording needle 39 pivoted to rotate with the pulley As shown, the pulley and needle are mounted. on .a spindle 40 which at its'rear end pivots in thel end of bar 41 extending from the supporting frame 42 and whose other end passes through a vertical A slot 4?- formed 1n the end of bar 44 also extending from the supporting frame 42. At the end of .the needle is carried a marking point- 45 which is normally out of Contact with-the dial 46, 4pivoted centrally at 47, and'which is connected with clock work 4S to be rotated. When the the engagement of the forward end of the spindle in the vertical slot 43. The spindle -is confined in its bearings by a cap Alplate as best.- shown at Fig. 5.

i The puz ey is of magnetic material, and 'disposed 1n front;

of its lower ed e is an electro-ma ner. f. g

'which upon energization will attract the pulleyv at its lower edge andwill cause tilting thereof and .enga-gement of the needle marking point with the record chart. The electro-magnet is supported in some suitable way as from a. bracket 50.'

In F igs. 6 and 7 is shown the mechanism for controlling the operation of the valve. 31. The valve plug is mount-ed on a shaft 51', which also mounts an escapement wheel cscapement frame 56,Whose c scapementv ends Y 51 and a driving pinion 52, this driving inion being engaged by a gearing 53 driven by clock mechanism 54. Pivoted at 55 is an 57 and 58 coperatenth the escapement teeth 59 of the escapement wheel, these escapenient teeth being three in, dumber. Supported by the escapement fram is an arv mature 60 which extends between electro-y magnet sets 61 and 62 to be attracted first by one and then by the other.

When analysis is to be made, the receptacle l is filled with some liquid which will not evaporate, the pipe 2' being filled to the line B-B andthe reservoir 3 being empty.

The receptacle 15 is filled with some liquid,

such as caustic potash, which will absorb carbon dioXid. The reservoir 17 and the lpipe 18 are also filled with some liquid and the measuring reservoir 19 is normally empty with the float at the bottom thereof andthe been filled, and the liquid is at the level indicated by the line A-A, the float 4 thereby being raised. The pulley` 6 will be rotated and the contact point l1 on arm 8 carried into engagement with the contact member 12. As soon as this contact is made we have the following electrical circuit: from the current source 63 through conductor 64,

arm 8, contact point 11, contact member 12, conductor 65, elect-romagnet set 61 and conductor 66, to the other terminal of the source 63. The armature {it} will there fore be attracted toward the electro-magnet set 61 to the positlon shown in Fig. 61nd the resultant swing of the escapcmeut rame will allow .the escapement wheel 59 and valve plug to be rotated one-sixth of e revolution by the -cloclr mechanism 54, and the ,paageway .condition at the valve will be as showninFig. 7. Wit-h these valve conditions the flue gas inlet 25 .will be connected throughv valve passa eway 32 with the vtmosphere outlet 13G. reservoir 1 will be connected through valve passageway 33 with the -piping 35 leading to the reservoir 15, and

the pipe 36 leading from the top of reservoir 16 wil be connected through valve passageway 34'with piping 38 leading to the top of reservoir 17. vvvmg to the level of the liquid in reservoir 3 this liquid 'will tend to flow back into reservoir 1 and to forcethe gas therein' through the valve and ipe 35 into the lower art of reservoir 15, w ich, as before stated, 1s filled with caustic potash. The gas bubbling u throu h this caustic pot-ash solution is r'o bed o its carbon d oxid, which is absorbdby the solution. The remaining gas, however, flows upwardl throu h the' bulb 16, which is filled wit glass carried. with te gas, and-the gas flows through pipe 36, valve passageway 34 and iquid in said reservoir is forced downwardly ads to revent solution from being by the gas and flows into the reservoir 19 to cause the plunger 20 to be raised. After all the gas has been forced out of reservoir 1 andthe float 4 has again reached its normal position, the arm 8 will have returned into engagement with contact member 10 to reclose the circuit through the electromagnet' set 62, this circuit being traced from the current source 63 through conductor 64, arm 8, contact point 9, contact member 10, conductor 67, electromagnet set' 62 and conductor 68, back to the current source. The

armature 60 will therefore behttracted by the electro-magnet set 62 and the escapement frame swung to allow another one-sixth rotation of the cscapement wheel and valve plug, whereu on the valve passageway conditions will be -as sho`wn 1n Fig. 1.. The record sheet is divided b lines 69 into hours or other suitable peri s of time and the circular lines 70 represent the percentage of residue or the percenta e of carbon dioxid. As the float 20 is rais in the'reservoir 19,

irs

the pulley 22 and the needle 39 are rotated.

After all the pas has'v been driven from the reservoir Land the float 20 has reached its top-most position, the arm 8 will have been restored to en gc the contact member 10 and the circuit just traced through electroma 'net set 62, closed. This circuit also inclu es electro-ma et 49 and therefore n .s soon as the needle as reached the final posias for instance, the per cent. of cai-hon dioxid Ain the particular gas sample tested.

,liter the valve has heen restored to the position shown in Fig. 1. another charge of tine gas enters the' reservoir 1. while at the sami-'time the liquid in reservoir 19 falls` to its normal level and forces the gas ont ot.

the reservoir 1T through the pipe 3S. and` to atmosphere through the valve passageway which now connects the valvel connecting ends 29 and lipings 35 and 36 are connected togetherl through one of the various passageways and the pressure conditions in said piping and in said reservoirs can he equalized. By the time the oat -l again reaches the line -A in reservoir f3 and the arm S is carried around into engagement with contact memberV 1'2. the gas will all have been driven from reservoir -1T and the measuring reservoir 19 is in condition for another measuring operation. The electro-magnet set (il then again becomes effective and the value rotated another onesixth of a revolution to citt otl the flue gas source and to connect the reservoir l with the measuring and analyzing mechanism, the caustic potash in the reservoir 15 absorbing the carbon dioxid and the residue reaching the reservoir 1T to force liquid into'` the measuring reservoir 19 and thereby cause another indicationvon the record sheet.

Xo. manual adjusting or testing steps are necessarydn our system, butall the parts are automatically controlled and the operation is caused to be continuous. The charges received by the receptacle 1 are of the saine volume. 'being controlled by the float. mechanism, which controls the circuit controlling mechanism for the valve actuating electromagnets. cach charge will be represented by the position of .a mark on the record chart, and after an extended test the chemical analysis can be plainly read from the chart. Our arrangement requires very little supervision as it is so automatic in its operation, all that is necessary to produce aV correct analysis of the flue gas to be tested being to connect the flue gas with valve inlet 2 5. Y-

lVe do not desire to be limited to the pre'- cise form and arrangement of the various parts which form a part oi our system.

lVe desire to secure the following claims by Letters Patent 1. ln a ga` analyzing appaiatus. the conibinatii of i reservoir, normally filled with a liquid. a measuring mechanism connected with said reservoir, said liqii'nleadapted to The. results of the `analysis of.

he forced into saidmeamiring mechanism hv the flow of gaa into said reservoir. :in analyzing device, a valve in its normal position connecting said reservoir with a source of gas supply and in its alternate position connecting said reservoir with said aiia'lyzing device. and actuating meanfor said valve.

said actuating means adapted to movc said valve from its normal to its alternate position when a predetermined volume of liquid has heen forced from saidrcscrvoir into said measuring mechanism. thci'chy estalilishing connection for said gas with .-aid' analyzing device. and causing: .iid liquid io resume its normal position in said i-i--erioin 3.. In agas analyzing apparatus. the conihination of a reservoir, normally tilled with a liquid. a measuring mechani-in comici-tedwith said reservoir. .said liquid-adapted to .he forced into said measuring mi clianisni hy the vflow of gasI into said reservoii. an analyzing device. a valve in its normal position connecting said reservoir with a source of 'gas supply and in its alternate position connecting said reservoir with said analyzing device. actuating mean.` tor said valve. said actuating means adapted to more said valve freni'its nonnal to ,its-alternate position when a predetermined' volume of liquid has been. forced from said reservoir intosaid measuring mechanism. thereby stablishing connection for said gas with ffar "analyzing device and causing said liquid -to-rcsnmeits normal position in said reservoir.anti-uddi.- tional actuating means for .said valve` .-aidl additioinil means adapted to move .-aid valve from its alternate to its normal position when said-liquid has resumed its normal position in said reservoir. i

'3. In a gas analyzing apparatus. the'conihination of a reservoir for receiving a charge of gas to he analyzed. an analyzing device.

a valve in its normal position adapted/'to' connect said reservoir with a souri-c oi' as supply and in its alternate position to connect said reservoir wit i said analyzing device. and an automatic device tor moving said valve from its normal to its alternate position. said device actuated hy the tluid displaced from said reservoir on the reception of ajpredeterinined amoiint'of gas. said gas thereby heilig discharged r'roin said reservoir into said analyzing device.

l. In a gas analyzing apparatus. the romliination ota reservoir normally containing Huid, an analyzing device. a valve in its nornial position adapted to connect said reservoir with a .source 0fg1lS.-lupply and in its alternate position to connect said reservoir' with said analyzing device. anover-low rev'alve from its normal to .its alternate posi` tion when a predetermined amount of fluid has been so received.

In a gas analyzing apparatus, the com blnation of a receptacle containing a liquid adapted to absorb a specified -gas from a 'gaseous mixture to be analyzed, means for forcing a predetermined volume of said gaseous mixture through the liquid in said receptacle, a second receptacle normally filled with liquid. means for conducting the residue gaseous mixture from said first receptacle into said second receptacle, thereby .forcing the liquidfrom said second receptacle,'and measuring means controlled by the liquid flowing from said second receptacle, said measuring means serving to indicate the proportion of theresidue gaseous mixture and ,thereby the proportion of the gas retained in the irst receptacle.

In a gas analyzing apparatus, the combination of a receptaclefilled with a reagent adapted to absorb a speciicd gas for which analysis of a gaseous mixture 1s to be made, means for forcing through the reagent in said receptacle-a predetermined volume of said gaseous mixture, a. second lreceptacle normally filled with liquid, means connecting the top of said setuid receptacle with said first receptacle, and ai. indicating mechanism adapted to be controlled by the over- Howbf liquid from said second receptacle.

7. In a gas analyzing apparatus, the combination of a reservoirfor receiving charges of -gas to be analyzed, an analyzing device, avalve adapted in its normal position to connect said reservoir with theA source of gas supply and in its alternate positionto disconnect said reservoir from said source and to connect said reservoir with said analyzing filled with liquid, of a source for supplying gas to be analyzed to said receptacle, an analyzing device. a yalve, in its normal positioii connecting said receptacle with said 'source of gas and'in its alternate position connecting. said' receptacle with sald analyzing device, an electromagnetic mechanisin actuating said valyc by a step by step advancement from normal to alternate and alternate to normal position, circuits asso4 ciated with said electromagnetic mechanism,

and a switch. adapted to close one of said circults when' a predetermined amount of gas has been supplied to said receptacle and to close the other of said circuits when said gas has been discharged from said i-e-:mltacle to said analyzing device.

9. In a gas analyzing Systran, the combiv.nation of means for measuring 'out lpredetermined amounts of gas to be amtlvzcd. an

analyzing device, electric means 'c trolled by said measuring mechanism for automat-- ically causing the discharge of each measured amount to said analyzing device, and indicating neans automaticalhr controlled reservoir with said source of gas and in its :alternate position to connect said.rcccptacle with said analyzing device, an electromagnetic mechanism for actuating said valve by a step by step advancement from its nora-tal to its alternate position and vice versa, circuits associated with said mechanism. a float in said over-How receptacle. and a switch mechanism associated with'said float, said fioat in its normal powered position adapted to cause said switch to close the circuit by which-said valve is brought to its; normal positi'on and in its alternate raised position adapted to cause said switch to close thc circuit by which said valve is .brought in its alternate position.

11.` In a device of the class described, a receptacle containing a .reagent adapted to absorb a specified gas from a gaseous mixture to be analyzed, a second receptacle normally filled with tluid and connected for the passage of gas with said first receptacle, means for forcing a predetermined volume of said gaseous mixture through said receptaele. a third receptacle to receive over-flow liquid from said second receptacle. a float in 'said third receptacle. and an indicating apparatus actuated by said float, said apparatus adapted to show the percentage ot gas absorbed from said gaseous mixture in said 'first receptacle.

In witness whereof. vwe hereunto subscribe our names this secondA day of November A. D. 1908. y

i KENT XV. BARTLETT.

JUDSON J. STALI'IY.

'itnesses:

JAcKsoN REUTER, SALLY Lorain-1u. f 

